About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
IEEE Transactions on Magnetics
Paper
Submicron domains for high density magneto-optic data storage
Abstract
This paper discusses the potential of using submicron magneto-optic domains for high density data storage applications. In TbFe, domains as small as 200 nm were controllably written and domains down to 70 nm diameter were observed to be magnetically stable. In order to demonstrate’ the use of submicron domains for data storage, a disk tester operating at 488 nm wavelength with 0.5 μm spot size was constructed. Using a TbFeCo disk, an areal density of 1.8 x 108 transitions/cm2 was demonstrated with 44 dB carrier-to-noise ratio (CNR). Reasons for decreased CNR at short wavelengths are discussed. © 1987 IEEE